Average GPS coordinates for Marco Postcode location: 41.171, -8.457. (Notice: some coordinates are "GEO located" from street addresses. These numbers may be inaccurate. With this map you can check the coordinates.). Marco on map:

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Listing cities & postcodes (3):
>> Porto, 4600-500 Marco, Corvo, Atenor, GPS coordinates: 41.1778,-8.5056
>> Porto, 4600-730 Marco, Corvo, Talhas, GPS coordinates: 41.1722,-8.45
>> Porto, 4610-853 Marco, São Roque do Pico, Vale Benfeito, GPS coordinates: 41.163,-8.4148